Heavy-duty pre-engineered buildings are the sturdiest portable shelter you can find. These industrial strength structures are made to withstand heavy winds in excess of 100mph, both balanced and unbalanced snow loads of 40-60lb per sq/ft and heavy rain. Our pre-engineered structures feature galvanized steel construction that will prevent rust and corrosion. The 100% certified USA Made galvanized steel goes through a triple-coating process inside and out that leaves no naked metal exposed to the elements. The patented stabilizer blocks at every rib connection add rock-solid strength and stability to the frame. The ratchet tight tensioning system keeps the cover smooth and tight. Advanced engineered, commercial grade cover material is UV treated inside and out to stand up to the elements.